No, I don't think you can order single-coils with gold poles - I'd have thought it's not possible to gold-plate alnico magnets. Could be wrong, though.
You can get humbuckers with gold (polepiece) screws and gold slugs - but you might have to make a special point of asking for the gold slugs, I think the standard might be gold screws but with regular steel slugs. Again, I'm not 100% sure.